CN110429352A - Constant current equilibrium model group and constant current balancer - Google Patents
Constant current equilibrium model group and constant current balancer Download PDFInfo
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- CN110429352A CN110429352A CN201910665833.2A CN201910665833A CN110429352A CN 110429352 A CN110429352 A CN 110429352A CN 201910665833 A CN201910665833 A CN 201910665833A CN 110429352 A CN110429352 A CN 110429352A
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- 238000012545 processing Methods 0.000 claims abstract description 75
- 238000006243 chemical reaction Methods 0.000 claims description 30
- 238000007599 discharging Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 abstract description 16
- 239000003990 capacitor Substances 0.000 description 8
- 230000002459 sustained effect Effects 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 238000004073 vulcanization Methods 0.000 description 3
- 238000012935 Averaging Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
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- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
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- 239000002253 acid Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
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- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
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- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/46—Accumulators structurally combined with charging apparatus
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention relates to a kind of constant current equilibrium model group and constant current balancers, constant current equilibrium model group includes: acquisition module, processing module and drive module, the input terminal of the processing module is connect with the output end of the acquisition module, the input terminal of the acquisition module with multiple batteries for connecting, the output end of the processing module is connect with the drive module, and the drive module with multiple batteries for connecting.Acquisition module is connect with each battery, to obtain the end voltage of each battery, the end voltage that acquisition module will acquire is sent to processing module and is analyzed and processed, processing result is sent drive module to drive the switch state between each battery by processing module, so that electricity is transferred to A-battery by high-tension battery, so that the end voltage between each battery is consistent, the voltage differences degree between each battery is thereby reduced.
Description
Technical field
The present invention relates to technical field of electric power communication, more particularly to a kind of constant current equilibrium model group and constant current balancer.
Background technique
With the continuous development of power system telecommunications technology, battery provides electric energy supply for power communication, and especially plumbic acid stores
Battery is used widely in the industry.Battery group is generally connected using the single battery of the 2V of multiple voltages, with right
Power voltage supply required for outer offer.
But influenced by factors such as battery raw material quality, production technology, operating ambient temperatures, even same type
Number, same batch battery, performance also can not be identical, for example, capacity, end voltage, internal resistance, charge-discharge performance, self-discharge rate,
State-of-charge etc. can not be identical.After these batteries are cascaded multiple charge and discharge, the difference between battery gradually shows,
Float charge voltage therein is related with rate of corrosion and vulcanization rate, and when float charge voltage is excessively high, the pole plate of battery, which corrodes, to be accelerated, that is, corrodes
Rate increases；When float charge voltage is too low, battery is easy vulcanization, i.e. vulcanization rate increases, so that the voltage of each battery is different, i.e., each electricity
Voltage differences degree between pond is big, so that the active volume of battery reduces, so that the service life of battery pack reduces.
Summary of the invention
Based on this, it is necessary to provide a kind of constant current equilibrium model group for reducing the voltage differences degree between each battery and constant current is equal
Weigh device.
A kind of constant current equilibrium model group, comprising: acquisition module, processing module and drive module, the processing module it is defeated
Enter end to connect with the output end of the acquisition module, the input terminal of the acquisition module with multiple batteries for connecting, the place
The output end of reason module is connect with the drive module, and the drive module with multiple batteries for connecting.
The acquisition module has multiple input terminals in one of the embodiments, and each of the acquisition module is defeated
Enter end to connect with a battery, for obtaining the end voltage of each battery.
It in one of the embodiments, further include conversion module, the input terminal of the conversion module and the acquisition module
Connection, the output end of the conversion module are connect with the processing module, and the conversion module is used to turn analog voltage signal
It is changed to digital voltage signal.
The conversion module includes analog-digital converter in one of the embodiments,.
The processing module includes processing unit and storage element in one of the embodiments, the conversion module
Output end is connect with the input terminal of the processing unit, and the input terminal of the output end of the processing unit and the storage element connects
It connects, the output end of the storage element is connect with the drive module.
The storage element includes bit shift register in one of the embodiments,.
The drive module includes driving unit and equalizing circuit in one of the embodiments, the driving unit
Input terminal is connect with the output end of the storage element, and the input terminal of the output end of the driving unit and the equalizing circuit connects
It connects, the output end of the equalizing circuit and the anode of battery connect.
The drive module further includes switch unit in one of the embodiments, the driving unit and the switch
Unit connection, the switch unit and the equalizing circuit.
The acquisition module includes Acquisition Circuit and charging and discharging circuit, the Acquisition Circuit in one of the embodiments,
It is connect respectively with multiple batteries, the charging and discharging circuit is connected with each battery to form primary Ioops.
A kind of constant current balancer in one of the embodiments, including the constant current as described in above-mentioned any embodiment
Equilibrium model group.
In above-mentioned constant current equilibrium model group and constant current balancer, acquisition module is connect with each battery, to obtain each battery
End voltage, the end voltage that acquisition module will acquire is sent to processing module and is analyzed and processed, and processing module is by processing result
Drive module is sent to drive the switch state between each battery, so that electricity is transferred to A-battery by high-tension battery, thus
So that the end voltage between each battery is consistent, the voltage differences degree between each battery is thereby reduced.
Detailed description of the invention
Fig. 1 is the modular structure schematic diagram of the constant current equilibrium model group of an embodiment；
Fig. 2 is the circuit diagram of the MOS drive circuit of an embodiment；
Fig. 3 is the circuit diagram of the equalizing circuit of an embodiment.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give better embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose of providing these embodiments is that making to understand more the disclosure
Add thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being set to " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement for illustrative purposes only, are not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Used term is intended merely to describe specific reality in the description of the invention
Apply the purpose of mode, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more relevant
Any and all combinations of listed item.
For example, a kind of constant current equilibrium model group, comprising: acquisition module, processing module and drive module, the processing module
Input terminal connect with the output end of the acquisition module, the input terminal of the acquisition module with multiple batteries for connecting, institute
The output end for stating processing module is connect with the drive module, and the drive module with multiple batteries for connecting.In above-mentioned perseverance
It flows in equilibrium model group, acquisition module is connect with each battery, to obtain the end voltage of each battery, the end voltage that acquisition module will acquire
It is sent to processing module to be analyzed and processed, processing result is sent drive module to drive opening between each battery by processing module
Off status, so that electricity is transferred to A-battery by high-tension battery, so that the end voltage between each battery is consistent, into
And reduce the voltage differences degree between each battery.
Referring to Fig. 1, its be an embodiment constant current equilibrium model group 10, comprising: acquisition module 100, processing module 200 with
And drive module 300, the input terminal of the processing module 200 are connect with the output end of the acquisition module 100, the acquisition mould
For connecting with multiple batteries, the output end of the processing module 200 is connect the input terminal of block 100 with the drive module 300,
The drive module 300 with multiple batteries for connecting.
In the present embodiment, acquisition module 100 is connect with each battery, to obtain the end voltage of each battery, acquisition module 100
The end voltage that will acquire is sent to processing module 200, and processing module 200 will control drive module according to collected end voltage
300 to drive the switch state between each battery, so that electricity is transferred to A-battery by high-tension battery, so that each battery
Between end voltage be consistent, thereby reduce the voltage differences degree between each battery.
In the present embodiment, multiple batteries are sequentially connected in series, and form battery pack, each input terminal of acquisition module is separately connected
The anode of one battery, the common end of the acquisition module and the cathode of battery pack connect, to acquire the end voltage of each battery, example
Such as, battery pack is by 24 section series-connected batteries at the nominal voltage of single battery is 2V, and the float charge voltage of single battery is
2.23V, the float voltage setting of battery pack are 53.5V, and the best effort charge voltage range of single battery is 2.2V~2.3V,
Its deviation is 100mV.
In one embodiment, referring to Fig. 1, the acquisition module 100 has multiple input terminals, the acquisition module
100 each input terminal is connect with a battery, for obtaining the end voltage of each battery.In the present embodiment, respectively
Battery is sequentially connected in series, i.e. the two poles of the earth of each battery are separately connected a battery namely the anode connection of each battery
One battery, the cathode of each battery are connected with another battery.The acquisition module 100 has multiple input terminals, described
Each input terminal of acquisition module 100 is connect with the anode of a battery, and the acquisition module 100 passes through the acquisition module
100 input terminal obtains the end voltage of corresponding battery, so that the acquisition module 100 obtains the end voltage of each battery, thus
So that the acquisition module 100 obtains the current voltage state of each battery in real time, and then it is convenient for the subsequent end voltage according to acquisition
Adjust the voltage of battery.
In one embodiment, the input terminal of the acquisition module 100 is transmitted using series signals, i.e., the described acquisition module
100 acquire an input terminal and the multiple institutes of the end voltage of multiple batteries namely the acquisition module 100 by an input terminal
Battery connection is stated, the end voltage of multiple batteries is obtained by an input terminal of the acquisition module 100, in this way, described
One input terminal of acquisition module 100 successively carries out the acquisition of end voltage to multiple batteries, so that the acquisition module 100
Each input terminal acquire the end voltage of multiple batteries, i.e., an input terminal of the described acquisition module 100 corresponds to more
A battery, so that the acquisition module 100 obtains most when the acquisition module 100 has multiple input terminals
The end voltage of the battery of amount reduces system so that the number of batteries of the corresponding collection terminal voltage of an acquisition module 100 increases
Make cost.
In one embodiment, referring to Fig. 1, the constant current equilibrium model group 10 further includes conversion module 210, the conversion
The input terminal of module 210 is connect with the acquisition module 100, the output end of the conversion module 210 and the processing module 200
Connection, the conversion module 210 are used to analog voltage signal being converted to digital voltage signal.In the present embodiment, described turn
Changing the mold block 210 includes analog-digital converter, and the input terminal of the conversion module 210 is connect with the output end of the acquisition module 100,
The end voltage transmission for the battery that the input terminal of the i.e. described conversion module 210 obtains the acquisition module 100 is to the processing mould
In block 200 namely the conversion module 210 obtains the end voltage for multiple batteries that the acquisition module 100 acquires, the conversion
Module 210 is converted to corresponding signal according to the end voltage of the battery of acquisition, for example, by this analog signal of the end voltage of battery
It is changed into corresponding voltage digital signal.Believe in this way, the terminal voltage signal of each battery is converted to corresponding voltage digital
Number, since digital signal is made of discrete data, so that the processing module 200 only need to end voltage to each battery
Discontinuity sampling is carried out, continuity acquisition is carried out without the end voltage to battery, so that the processing module 200 is to battery
End voltage acquisition it is more convenient, reduce the cost to battery voltage acquisition.
In one embodiment, referring to Fig. 1, the processing module 200 includes processing unit 221 and storage element
222, the output end of the conversion module 210 is connect with the input terminal of the processing unit 221, the processing unit 221 it is defeated
Outlet is connect with the storage element 222.In the present embodiment, the processing unit 221 is used for the analysis processing to signal, i.e.,
The voltage signal that will acquire is converted to corresponding instruction execution signal, in order to the drive to 300 concrete operations of drive module
It is dynamic.The input terminal of the processing unit 221 is connect with the output end of the conversion module 210, shows that the processing unit 221 obtains
The digital signal for taking the conversion module 210 to export, the signal that the processing unit 221 is exported according to the conversion module 210
Voltage processing analysis is carried out, i.e., multiple voltage signals that the conversion module 210 exports are subjected to averaging operation, also i.e. by institute
State conversion module 210 and be delivered to the voltage signal of the processing unit 221 and be converted to average-voltage signal, for example, battery pack by
24 section series-connected batteries are at the nominal voltage of single battery is 2V, and the float charge voltage of single battery is 2.23V, battery pack
Float voltage setting is 53.5V, and the best effort charge voltage range of single battery is 2.2V~2.3V, deviation 100mV,
Average voltage is the equal threshold voltage of 24 batteries total voltages.Moreover, the average-voltage signal that the processing unit 221 also will acquire
It is compared with the corresponding voltage signal of multiple batteries of the conversion module 210 output, to obtain the voltage of battery and put down
Relationship between equal voltage, i.e., judge the voltage status of battery according to the terminal voltage signal of the average-voltage signal and battery,
For example, the processing unit 221 exports charging instruction and stores to described when the end voltage of battery is greater than the average voltage
Storage element 222；For another example, when the end voltage of battery is less than the average voltage, the output of the processing unit 221 electric discharge instruction
And it stores to the storage element 222.In this way, the processing unit 221 judges its current voltage according to the end voltage of battery
State, consequently facilitating the subsequent corresponding charge and discharge of battery progress to different voltages state is electrically operated, so that the electricity of each battery
Pressure condition maintains same voltage, so that the voltage swing of each battery is average, reduces the voltage difference between each battery
Different degree improves the service life of battery pack.
In one embodiment, the processing unit includes MCU (Microcontroller Unit, single-chip microcontroller) processing electricity
Road, the storage element include bit shift register, and the input terminal of the MCU processing circuit and the output end of the conversion module connect
It connects, the output end of the MCU processing circuit is connect with the input terminal of the bit shift register, the output end of the bit shift register
It is connect with the drive module 300.In the present embodiment, the end electricity that the MCU processing circuit exports the conversion module 210
Pressure signal is handled, for example, obtaining the end voltage of all batteries according to the terminal voltage signal that the conversion module 210 exports
Total voltage, that is, obtain the total voltage of battery pack, namely summation process is carried out to the end voltage of each battery；For another example, according to battery
The total voltage of group and the quantity of battery, obtain the average voltage of battery pack, i.e., carry out place of averaging to the end voltage of battery pack
Reason；For another example, according to the end voltage of the average voltage and each battery, the voltage status of each battery is obtained, i.e., to each
The current voltage of battery is judged, for being higher than the corresponding battery of end voltage of average voltage, determines the voltage shape of this battery
State is overvoltage condition, for being lower than the corresponding battery of end voltage of average voltage, determines that the voltage status of this battery is under-voltage shape
State.The MCU processing circuit exports corresponding driving instruction according to above-mentioned judging result, for example, the voltage status when battery is
When overvoltage condition, electric discharge instruction is sent to the drive module 300 by the bit shift register by the MCU processing circuit,
So that carrying out decompression processing to the battery；For another example, when the voltage status of battery is under-voltage condition, the MCU processing electricity
Charging instruction is sent to the drive module 300 by the bit shift register by road, so that boosting to the battery
Processing.Change for the ease of the voltage to each battery is unified, electric discharge instruction and charging instruction is temporarily stored into the buffer, institute
It states buffer temporarily to store the operational order that will be executed, the MCU processing circuit refers to according to electric discharge instruction and charging
The case where enabling adjusts the equalizing circuit diameter of battery, i.e., by the charge transport for the battery that voltage status is overvoltage condition to voltage shape
State is the battery of under-voltage condition, namely crosses charge transfer in piezoelectric battery to under-voltage battery, so that in the electricity for keeping all batteries
It presses under unanimous circumstances, reduces and use external power supply electrically operated to battery progress charge and discharge, to reduce the constant current equilibrium model
The cost of manufacture of group.
In one embodiment, referring to Fig. 1, the drive module 300 includes driving unit 310 and balanced unit 320,
The input terminal of the driving unit 310 is connect with the output end of the storage element 222, the output end of the driving unit 310
It is connect with the input terminal of the balanced unit 320, the output end of the balanced unit 320 and the anode of battery connect.In this reality
It applies in example, the driving unit 310 has multiple output ends, each output end of the driving unit 310 and a battery
Connection, the driving unit 310 respectively operate multiple batteries, and the driving unit 310 receives the resolution unit 220
The driving instruction of transmission, the driving unit 310 executes corresponding operation according to the driving instruction, since each driving refers to
Order corresponds to a battery, and the operation that the driving unit 310 executes is carried out to wherein corresponding to battery, so that the drive
Moving cell 310 individually operates each battery, so that it is mutually indepedent that the charge and discharge of each battery is electrically operated
It carries out.Moreover, the charge and discharge of each battery it is electrically operated be it is relevant to balanced unit 320, the driving unit 310 is according to obtaining
Take driving instruction adjustment balanced unit 320 and battery between the case where being turned on and off, for example, work as the driving unit
When 310 driving instruction obtained are charging instruction or electric discharge instruction, the corresponding electricity of driving instruction is connected in the driving unit 310
Pond and balanced unit 320, so that the balanced unit 320 charges the battery or discharge operation.In this way, for over-voltage or
The battery that person is under-voltage discharges or charges respectively, so that the voltage of all batteries maintains on same voltage level, thus
The voltage differences degree between each battery is reduced, so that the active volume of battery pack improves, extends the use of battery pack
Service life.
In one embodiment, the driving unit includes MOS (Metal Oxide Semiconductor, metal oxidation
Object semiconductor) driving circuit, the output of the input terminal of the MOS drive circuit and the control chip in the MCU processing circuit
End connection, PWM (Pulse Width Modulation, pulse width modulation) wave that the voltage of control chip output is 3.3V,
Since its amplitude can not drive the metal-oxide-semiconductor in the balanced unit, it is therefore desirable to be amplified to the signal of control chip output
Processing, so that the equalizing circuit is carried out corresponding instruction.Moreover, the MOS drive circuit is needed to PWM drive signal
It is isolated, in order to avoid cause battery pack short-circuit.
In the above-described embodiments, the MOS drive circuit particular circuit configurations are as shown in Fig. 2, the MOS drive circuit 20
Including signal amplification circuit 400, push-pull circuit 500 and transformer circuit 600；The signal amplification circuit 400 includes first
Capacitor C1, first resistor R1, second resistance R2, the 5th resistance R5 and the first triode Q1, the output of the MCU processing circuit
End is connect by the 5th resistance R5 with the base stage of the first triode Q1, the first end of the first capacitor C1 for
For voltage source VSS connection, the second end of the first capacitor C1 is connect with the base stage of the first triode Q1, described for piezoelectricity
Source VSS is connect by the first resistor R1 with the collector of the first triode Q1, the current collection of the first triode Q1
Pole is also connect by the second resistance R2 with the input terminal of the push-pull circuit 500, the base stage of the first triode Q1 with
Emitter ground connection,；The push-pull circuit 500 includes the second triode Q2 and third transistor Q3, the first triode Q1
Collector by the second resistance R2 respectively with the base stage of the second triode Q2 and the third transistor Q3 connect
It connects, described to be connect for voltage source VSS with the collector of the second triode Q2, the emitter of the second triode Q2 and institute
State the emitter connection of third transistor Q3, the grounded collector of the third transistor Q3；The transformer circuit 600 includes
3rd resistor R3, the second capacitor C2, the first transformer T1, third capacitor C3, the 4th resistance R4, first diode D1 and the 6th
The emitter of resistance R6, the second triode Q2 are connected by the first end of the 3rd resistor R3 and the second capacitor C2
It connecing, the second end of the second capacitor C2 is connect with the first end of the first transformer T1, and the of the first transformer T1
Three ends and the 4th end ground connection, the 6th end of the first transformer T1 pass through the third capacitor C3's and the 4th resistance R4
First end connection, the second end of the 4th resistance R4 are connect with the cathode of the first diode D1, the first diode
The second end of D1 is grounded, and the second end of the 4th resistance R4 is grounded by the 6th resistance R6.It is described in foregoing circuit
The voltage at the both ends of the 6th resistance R6 be the MOS drive circuit output end voltage, it is described for voltage source VSS be+12V DC
Voltage source is powered for the MOS drive circuit, and the input of the MOS drive circuit is the PWM wave of 3.3V, by the signal
Discharge circuit is carrying out power amplification by the push-pull circuit 500 later, using the change so that PWM wave signal amplifies
The progress signal isolation of transformer circuits 600, the PWM wave of final output 12V, so that the metal-oxide-semiconductor normal driving in the balanced unit,
Consequently facilitating the balanced unit executes corresponding charge and discharge operational order to each battery.Wherein, second triode and institute
Stating third transistor is two kinds of different triodes of polarity.
In one embodiment, the balanced unit includes equalizing circuit, and the particular circuit configurations of the equalizing circuit are such as
Shown in Fig. 3, the equalizing circuit 30 continues including the first inductance L1, the first MOS switch pipe Sn1, the second MOS switch pipe Sn2, first
The drain electrode for flowing diode Dn1 and the second sustained diode n2, the first MOS switch pipe Sn1 passes through the first inductance L1
It is connect for the anode with the first power supply P1, the cathode of the source electrode of the first MOS switch pipe Sn1 and the first power supply P1 connect
It connects, anode of the drain electrode of the second MOS switch pipe Sn2 for second source P2 is connect, the second MOS switch pipe Sn2
Drain electrode also connect with the cathode of the second sustained diode n2, the source electrode of the second MOS switch pipe Sn2 and described the
The drain electrode of one MOS switch pipe Sn1 connects, the source electrode of the second MOS switch pipe Sn2 also with the second sustained diode n2
Anode connection, the anode of the second sustained diode n2 passes through the first sustained diode n1 and the first MOS
The source electrode of switching tube Sn1 connects, the grid of the grid of the first MOS switch pipe Sn1 and the second MOS switch pipe Sn2
It is connect respectively with the MOS drive circuit.In this way, when the voltage of the output end of the MOS drive circuit opens MOS switch pipe
When, according to the driving instruction of input, i.e., the voltage swing exported according to the MOS drive circuit is corresponding to open the first power supply P1
Or second source P2, it is embodied as corresponding battery and carries out charge and discharge.
In one embodiment, the drive module further includes switch unit, the driving unit and the switch unit
Connection, the switch unit are connect with the equalizing circuit.In the present embodiment, the switch unit is located at the driving unit
Between the equalizing circuit, the switch unit is as being turned on and off between the driving unit and the equalizing circuit
Control unit, the switch unit executes the behaviour of corresponding opening and closing according to the driving instruction that the driving unit obtains
Make, i.e., the described switch unit opens or closes the equalizing circuit, and the equalizing circuit has multiple output ends, the balanced electricity
Each output end on road is connect with a battery, and the output end of the equalizing circuit is used to control the charge and discharge to battery, example
Such as, when the driving unit obtains charging instruction or electric discharge instruction, the switch unit be connected to the battery and it is described
Weigh circuit, so that the equalizing circuit and corresponding battery electrical communication.Moreover, being instructed according to charging instruction or electric discharge, institute
It states equalizing circuit and charge or discharge is carried out to corresponding battery.Wherein, charging instruction and electric discharge instruction are the ends according to battery
The comparison result of voltage and average voltage determines.In this way, the switch unit is logical when the end voltage of battery is less than average voltage
The equalizing circuit is crossed to charge to corresponding battery；When the end voltage of battery is greater than average voltage, the switch is single
Member discharge by the equalizing circuit corresponding battery so that over-voltage or under-voltage battery carry out respectively discharge or
Person's charging, so that the voltage of all batteries maintains on same voltage level, reduces the voltage differences between each battery
Degree, so that the active volume of battery pack improves, extends the service life of battery pack.
In one embodiment, referring to Fig. 1, the acquisition module 100 includes Acquisition Circuit 110 and charging and discharging circuit
120, the Acquisition Circuit 110 is connect with multiple batteries respectively, and the charging and discharging circuit 120 is connected with each battery to be formed
Primary Ioops.In the present embodiment, the Acquisition Circuit 110 has multiple input terminals, each input of the Acquisition Circuit 110
It holds and is connect with the anode of a battery, the Acquisition Circuit 110 acquires the front voltage of working as of each battery, the acquisition respectively
The end voltage transmission that circuit 110 will acquire to the processing module 200 is handled, by 200 processing of processing module
Afterwards, the drive module 300 obtains the driving instruction that the processing module 200 is sent, and the drive module 300 is according to the drive
Dynamic instruction is discharged or is charged to over-voltage or under-voltage battery, and to the charge and discharge of battery during, electricity can be generated
The excessive or very few situation of lotus amount, the charging and discharging circuit 120 forms circuit loop with battery, in this way, the charge and discharge are returned
Road 120 realizes that charge transmits between each battery, so that the charge transfer of over-voltage battery discharge is into under-voltage battery, to make
The voltage for obtaining all batteries maintains on same voltage level, the voltage differences degree between each battery is reduced, so that electric
The active volume of pond group improves, and extends the service life of battery pack.
In one embodiment, the constant current equilibrium model group includes voltage collection circuit, analog-digital converter, MCU control electricity
Road, bit shift register, MOS drive circuit and equalizing circuit, the voltage collection circuit detect multiple batteries and connect to be formed
Battery pack, the voltage collection circuit have multiple input terminals, each input terminal of the voltage collection circuit and an electricity
The anode connection in pond, the common end of the voltage collection circuit and the cathode of battery pack connect, the input of the analog-digital converter
End is connect with the output end of the voltage collection circuit, and the output end of the analog-digital converter is defeated with the MCU control circuit
Enter end connection, the output end of the MCU control circuit is connect with the input terminal of the bit shift register, the bit shift register
Output end is connect with the input terminal of the MOS drive circuit, and the output end of the MOS drive circuit is defeated with the equalizing circuit
Enter end connection, the equalizing circuit has multiple output ends, each output end of the equalizing circuit and a battery are just
Pole connection, the equalizing circuit control the end voltage of each battery, and the equalizing circuit carries out charge and discharge to corresponding battery
It is electrically operated, i.e., it charges to under-voltage battery, discharges piezoelectric battery is crossed, so that the end voltage of each battery is consistent, drop
Voltage differences degree between low each battery, so that the active volume of battery pack improves, extend battery pack uses the longevity
Life.
In one embodiment, it is related to a kind of constant current balancer, including any of the above-described constant current as described in the examples is equal
Weigh mould group.
In above-mentioned constant current balancer, acquisition module is connect with each battery, to obtain the end voltage of each battery, acquires mould
The end voltage that block will acquire is sent to processing module and is analyzed and processed, and processing result is sent drive module to drive by processing module
The switch state between each battery is moved, so that electricity is transferred to A-battery by high-tension battery, so that between each battery
End voltage is consistent, and thereby reduces the voltage differences degree between each battery.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of constant current equilibrium model group characterized by comprising acquisition module, processing module and drive module, the processing
The input terminal of module is connect with the output end of the acquisition module, and the input terminal of the acquisition module is used to connect with multiple batteries
It connects, the output end of the processing module is connect with the drive module, and the output end of the drive module is used for and multiple batteries
Connection.
2. constant current equilibrium model group according to claim 1, which is characterized in that the acquisition module has multiple input terminals,
Each input terminal of the acquisition module is connect with a battery, for obtaining the end voltage of each battery.
3. constant current equilibrium model group according to claim 1, which is characterized in that it further include conversion module, the conversion module
Input terminal connect with the acquisition module, the output end of the conversion module is connect with the processing module, the modulus of conversion
Block is used to analog voltage signal being converted to digital voltage signal.
4. constant current equilibrium model group according to claim 3, which is characterized in that the conversion module includes analog-digital converter.
5. constant current equilibrium model group according to claim 3, which is characterized in that the processing module includes processing unit and storage
Memory cell, the output end of the conversion module are connect with the input terminal of the processing unit, the output end of the processing unit with
The input terminal of the storage element connects, and the output end of the storage element is connect with the drive module.
6. constant current equilibrium model group according to claim 5, which is characterized in that the storage element includes bit shift register.
7. constant current equilibrium model group according to claim 5, which is characterized in that the drive module include driving unit and
Weigh circuit, and the input terminal of the driving unit connect with the output end of the storage element, the output end of the driving unit and
The input terminal of the equalizing circuit connects, and the output end of the equalizing circuit and the anode of battery connect.
8. constant current equilibrium model group according to claim 7, which is characterized in that the drive module further includes switch unit,
The driving unit is connect with the switch unit, the switch unit and the equalizing circuit.
9. constant current equilibrium model group according to claim 1, which is characterized in that the acquisition module includes Acquisition Circuit and fills
Discharge loop, the Acquisition Circuit are connect with multiple batteries respectively, and the charging and discharging circuit is connected with each battery to be formed
Primary Ioops.
10. a kind of constant current balancer, which is characterized in that including the constant current equilibrium model as described in any one of claim 1 to 9
Group.
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| CN201910665833.2A CN110429352A (en) | 2019-07-23 | 2019-07-23 | Constant current equilibrium model group and constant current balancer |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105553026A (en) * | 2016-01-29 | 2016-05-04 | 华南理工大学 | Battery pack electricity equalization circuit and equalization method |
| CN210326037U (en) * | 2019-07-23 | 2020-04-14 | 广州供电局有限公司 | Constant current equalizing module and constant current equalizing device |
-
2019
- 2019-07-23 CN CN201910665833.2A patent/CN110429352A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105553026A (en) * | 2016-01-29 | 2016-05-04 | 华南理工大学 | Battery pack electricity equalization circuit and equalization method |
| CN210326037U (en) * | 2019-07-23 | 2020-04-14 | 广州供电局有限公司 | Constant current equalizing module and constant current equalizing device |
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